The answer is, you don't. What you should do is sit down at the keyboard and start typing. Maybe just five words to start with, but by golly it's something, isn't it? Besides what may be feeding those first five words are the first drops of blood that slip from that offended organ.
A writer, a really good one, must possess the ability to sift and sort, like a rabid Indiana Jones, through the sands of mental mayhem that we call ourselves. Living in the bubble of self-ignorance isn't an option for writers, especially those who want to reach out and get their readers involved in the story.
A writer can't ask a reader to sink their their emotions into the story if they don't. If a writer doesn't give as much as they desire to get, then they shouldn't dare to think for one minute they'll get anything back. Hearts were made to be broken, battered, bruised, even bashed against the proverbial rocks now and again. They were born to survive it, to thrive on it, and in the end to triumph over the tribulations with a certain glee.
If, as a writer, you believe that your heart should be pristine, perfect and plump with love and adoration for the world then you're not thinking with a writers heart. Our hearts bleed, weep, flop and flail on the ground like a hooked fish, they see more action than a Bruce Willis flick. They are often desiccated as a mummy's lips from kissing the world. Don't get me started on the toad population!
In short, a writers heart should lead them through a perilous minefield of emotional exploration and discovery each and every day. What you discover, about yourself, your ability to recover and even, the bittersweet price of betrayal and regret, will lead you to being a writer that can't be ignored. The kind who tells a story that can break hearts and maybe, even mend them.
It's all in a days words.